Home / 28,509.70-39,342.54-15,934.42

Finding the Fourth Proportional to 28,509.70, 39,342.54 and 15,934.42

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Solution

The fourth proportional to 28,509.70, 39,342.54 and 15,934.42 is: 21,989.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.70 : 39,342.54 = 15,934.42 : x
  2. Step 2: Convert to fraction form
    28,509.70/39,342.54 = 15,934.42/x
  3. Step 3: Cross multiply
    28,509.70x = 39,342.54 × 15,934.42
  4. Step 4: Simplify right side
    28,509.70x = 626,900,556.23
  5. Step 5: Solve for x
    x = 626,900,556.23/28,509.70
  6. Step 6: Final answer
    x = 21,989.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.